Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a06aab35ad4de69…

MALICIOUS

PDF

75.0 KB Created: 2021-03-30 00:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29b0db0c38d072c1d61e35bb27afc969 SHA-1: e19a78dd61cd4bc137b52639372e748c94855b8d SHA-256: 8a06aab35ad4de69a36f52d76a78577f922e4dadd126e7029c0e573ff884ca1e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'maypoin.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/award?keyword=edit+pdf+files+online+adobe
    • http://zzzmmmmejjj.space/78594831022wipvt.pdf
    • https://xurugafidas.weebly.com/uploads/1/3/6/0/136081795/pidizut.pdf
    • http://lifobamalelit.22web.org/what_are_the_characteristics_of_an_arid_climate.pdf
    • http://fruitslope.online/civic_reset_maintenance_light72yab.pdf
    • https://xafukulirodut.weebly.com/uploads/1/3/1/3/131379356/5515974.pdf
    • https://xiluxobafuju.weebly.com/uploads/1/3/5/3/135323992/kijilodetajutusavude.pdf
    • http://gekifek.scienceontheweb.net/zeminogasupupurim.pdf
    • http://kexagatedonekun.iblogger.org/lamborghini_song_320kbps_pagalworld.pdf
    • http://esclub.info/99066052765of6l5.pdf
    • https://sibibogug.weebly.com/uploads/1/3/5/9/135990875/kaligujiwowa-lufaponaja-vipewor.pdf
    • https://kuzigojuzomuw.weebly.com/uploads/1/3/2/6/132683135/novebupozizamunu.pdf
    • http://zexaribamemavi.sportsontheweb.net/xajakutabudivaki.pdf
    • http://rilomenininun.getenjoyment.net/85488886340.pdf
    • https://tepukijamuboze.weebly.com/uploads/1/3/5/3/135301813/193874.pdf
    • http://naturaleone.space/how_to_write_a_script_for_a_movie_in_malayalamnc8rs.pdf
    • http://tapozifokun.mywebcommunity.org/reduction_file_size_online.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kotuwelu.rf.gd/appendicitis_guidelines.pdf
    • http://fajazimigig.atwebpages.com/exploratory_data_analysis_using_r.pdf
    • https://s3.amazonaws.com/tometubufimopim/vomowepefo.pdf
    • https://s3.amazonaws.com/kefefetafij/new_ps4_gold_headset_review.pdf
    • https://s3.amazonaws.com/bisapovepizaj/forbes_billionaire_list_2018.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8b2.bin
8236af2699d320bf3cd83177607d2cc66ad90601aa277e098ce1425eede86059
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B2 5036 bytes
font_01_sfnt_off0000f9e4.bin
06f63fbc0ee8c6fc122f46897b89b477ace0746b73d5950bee480ca9b7c8e2df
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E4 10848 bytes